Grinding and polishing cone.



C. M.v KOONTZ.

v GRINDING AND POLISHINVG GONE.

APPLICATION FILED Dnc za, 1913.

l 1,119,760 v Patented Deo. 1, 1914.

500ml/12oz CTM/(00112@ WMM/wow WM 33,, &9 W l arrow@ CLINTON MYERS `KOONTZ, F ALLENTOWN, PENNSYLVANIA.

GRINDING AND IOLISHING GONE.

Specification of Letters Patent.

Patented Dec. 1, 1914.

Application led December 23, 1913. Serial No. 808,835.

To all lwhom t may concern Be it known that I, CLINTON MYERS KooNTz, a citizen of the United States, residing at Allentown, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improve- `ments in Grinding and Polishing Cones;

' what may be termed grinding, abrading, or

. polishing cones.

The invention has for its object to provide for suitably effecting the grinding or reducing, particularly, of rubber plates after having been vulcanized for dental or other purposes.

A further object is to provide. for facility or readiness of manufacture of the grinding or abrading cone.

A still further object is to reduce or minimize the number of parts required in the making of the grinding cone.

A still further object is to render the device highly efective and readily applied for its intended purpose.

A still further ob]ect is to carry out the aforesaid ends in a simple and expeditious manner.

The invention therefore consists of certain instrumenta-lities and features of construction substantially as hereinafter fully disclosed and defined by the appended claims.

In the accompanying drawing is illustrated the preferred embodiment of my invention wherein it'will be understood that various changes and modifications of the detailed construction and arrangement of the parts may be made without departing from the spirit 'of the invention, and i n which drawing:

Figure 1 is -a perspective view of my improved grinding or reducing cone. Fi Q is a central longitudinal section thereof as exemplified for practical use. Fig. 3 is a rear end elevation of the grinding or abrading cone detached from the carrying mandrel therefor. Fig. 4l is a vertical transverse section thereof. Fig. 5 is a plan view of the preferably abrading strip or blank viewing the adhesive treated surface or side thereof. Fig. 6 is an opposite side view of the same.

In carrying out my invention I suitably provide a mandrel, shaft or carrying member .1 for the grinding or abra-ding cone 2, said mandrel or carrying member being manually or hand actuated, it being rotatably supported in position in any suitable way, preferably as shown and having a handle or crank 3 at one end. The opposite end of the cone carrying member or shaft 1 is disk 4, the extreme terminal of said shaft or carrying member being provided with a longitudinal slit, split or slot 5 extending inwardly to the disk or circular shoulder 4 for a purpose presently seen.

A grinding or abrading cone 2, as herein employed, is formed from a suitably provided blank 7, generally of sandpaper, with the inner side orl surface thereof suitably coated or treated with an adhesive, as glue or the like for effecting adherence between its folds or windings, as will more fully presently appeal'. The blank 7, as disclosed in Figs. 5 and 6, is produced in general longitudinal strip-outline with a portion of its length adapted by suitably winding or rolling the same upon itselfy to constitute a double thickness of cylindrical orl tubular outline, as at 8, at its normally rear end for the reception of the slotted end portion 5 of the mandrel 1 which rear end rests against the shoulder 4 of the mandrel. The remaining portion of the strip or blank 7, as it is wound upon itself, results in the formation of a vhollow cone, as at 9, whereby as the outer end layer or winding of the strip is brought into grinding or abrading engagement or action, by suitably actuating the mandrel with the object, as a. vulcanized rubber plate, said end abrading layer will have the effect to suitably reduce ,or cut away the rubber plate, also to conform by reason of its iexibility to the outline of the surface being ground or reduced as is apparent. It will also be seen that as the winding or layer after layer of the abrading material or sandpaper ofthe cone is .used up the same is readily removable until the entire cone or the windings thereof are utilized, as will be readily appreciated.

In applying the cone forming strip to the mandrel 1 the initial end 10 of said strip is. inserted into the'slit or slot of the formed with a circular portion orv ing. atapering strip omaterial with an .l

the tubular or :cylindrical portion Softhe cone,j'they windings or layers of the strip resulting from the actuation of the mandrel I being simnltaneously ybrought into adhesive contact with each other accordingly completing-the formation of the cone. Adhesive' material -r gluemay be also applied .tothe resulting rear edges of the cone strip Windings or layers for further yor. greater ad-4 hei-ence.v therebetween. f-

An abrading or grinding Acone is thus produced which does -not require any additional fastening means outside, of itself for the retention of its windings l.or layers one in 'contact with the j other at 'their .rear edges and the cone itself uponfits carrying or actuating mandrel as heretofore. made necessary, as is thought has been made clearly apparent.

Having thus fully f described. the y. invention what l claim as new Aand desire .to se'- 'cure by Letters. Patent isz- 1. A grinding orabradingcone l includformation,

the ylayers of Asaid I the said transverse bend therein, saidv strlp l tour of 'said Wound strip formingl a nriefreo outer abrading surfacejand an inner aering surface, said strip being Wound 'upon itself in layers resnlting in an internal cone the extreme inner end of the tapered strip lying' transverse of the am's of said cone, to-enter'a bifurcated ,mandrel,.

the layers of said cone extending beyond the said transverse end'. of said strip, substantially as described. v W l 2. In a grinding orabrading contrivance,

drel having'a bifurcated end withfa'shouh .der adjacent said bifurcation, the slit of said urcation receiving the extreme inner end bif therein transverse ofthe axis' of said cone. cone extending beyond forming strip and a many of said tapered strip and forming abend being Wound by the actuation of said mandrel layer upon layer, the resulting clono ow testilnony wher-edf; .I ture, in,r presence oftwo. Witnesses.

Witnesses:

CLAUDE T. RENO,` l M.nnr BEARY.

. 5o signa- .1. LCLJINTON MYERS-.KUNTZ. 

